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3 years ago

Which best describes a row of elements in the periodic table?

Physics

1 answer:

marissa [1.9K]3 years ago

5 0

Answer:

well i know that the horizontal rows are called periods and the vertical ones are called groups

Explanation:

I don't really know what this question is exactly asking

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Consider two point charges located on the x axis: one charge, q1= -11.0 nC, is located at x1= -1.675 m; the second charge, q2= 3

Mekhanik [1.2K]

Answer:

Please refer to the figure.

q1 is a negative charge, and q2 and q3 are positive charges. So, the force exerted by q1 on q3 is attractive, and the force exerted by q2 on q3 is repulsive, which means F13 is directed towards left, and F23 is also directed towards left.

$F_{13} = \frac{1}{4\pi \epsilon_0}\frac{q_1 q_3}{r_1^2} = \frac{1}{4\pi \epsilon_0}\frac{11\times 10^{-9}\times 47.5\times10^{-9}}{(-1.675 - (-1.18))^2} = 1.92\times 10^{-5}N$

$F_{23} = \frac{1}{4\pi\epsilon_0}\frac{q_2q_3}{r_2^2} = \frac{1}{4\pi\epsilon_0}\frac{31\times 10^{-9} \times 47.5\times 10^{-9}}{(-1.18 - 0)^2} = 9.5\times 10^{-6}$

The net force on q3 is the sum of these two forces:

$F_{net} = F_{13} + F_{23} = -1.92\times 10^{-5} + (-19.5\times10^{-6}) = 2.8\times 10^{-5} N$

Since both forces are directed towards left, their sign should be negative.

5 0

3 years ago

Earth attracts a person with a gravitational force of 7.0 × 102 newtons. What is the magnitude of the force with which the indiv

kirza4 [7]

B. In the system of the object and the earth, by Newton's third law, the object will exert and equal and opposite force upon the earth.

3 0

4 years ago

Read 2 more answers

Whic two types of cells are required during the process of osteogenesis

Mkey [24]

Answer:

Bone homeostasis involves multiple but coordinated cellular and molecular events. Two main types of cells are responsible for bone metabolism: osteoblasts (which secrete new bone), and osteoclasts (which break bone down).

Explanation:

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3 years ago

What is the bump on the lateral side just proximal to the 5th metatarsal?

xeze [42]

The description refers to the styloid process or tuberosity. This styloid process is seen in the 5th metatarsal and this area shows the fifth metatarsal's growth plate. This bone is being attached by strong tendon known as the <span>Peroneus brevis tendon.</span>

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4 years ago

Two microphones are connected to a

ale4655 [162]

Answer:

344.8 m/s

Explanation:

Looking for speed of sound = meters / sec

2 meters / .0058 seconds = 344.8 m/s

5 0

2 years ago